I fail to see how screaming at your significant other actually helps the situation. My wife and I have never raised our voices in a disagreement, we are always calm and composed when working something out.

Nothing better than a verbal domestic! Spill the tea!

Open the door and roll out of the car. Especially if you're the driver.

Join them. Just start shouting random things.

Well you have to love it when that happens. What was the argument over anyway? Some details would be funny to read.

You need to scream, "Yeah!", "Amen to that!" or "You go, girl!" every time your sister screams something. Your family needs to crush this interloper!